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<p>[QUOTE=&quot;GDJMSP, post: 1865612, member: 112&quot;]The Sheldon rarity scale was originally developed and only used for large cents. Later it was somewhat adapted and used for early american and colonials. Later still Breen copied the numbers and R ratings, with 2 exceptions R8 is for 1-3 known whereas Sheldon has R8 at 2 or 3 known, and Unique for 1 known (which some folks refer to as R9).</p><p><br /></p><p>Breen&#039;s -</p><p><br /></p><p><img src="http://www.novanumismatics.com/wp-content/uploads/2013/01/BreensRarityScale.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>Sheldon&#039;s - </p><p><br /></p><p><img src="http://www.novanumismatics.com/wp-content/uploads/2013/01/SheldonRarityScale.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>But there are many, many rarity scales. Some of which are also based on Sheldon&#039;s scale. But some are quite different and some deal much larger numbers, larger even than URS uses. For example, the Van Allen and Mallis rarity scale - </p><p><br /></p><p><img src="http://www.novanumismatics.com/wp-content/uploads/2013/01/MorganPeaceDollarScale.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>And the Freeman scale for Great Britain Bronze Coinage uses even larger numbers - </p><p><br /></p><p><img src="http://www.novanumismatics.com/wp-content/uploads/2013/01/GBBronzeScale.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p><br /></p><p>But unless you get down to where there are less than 20 or so known, yeah, all of the numbers are guesses. But in most cases, educated guesses.[/QUOTE]</p><p><br /></p>

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